Home / 3,380.60-5,070.90-2,214.20

Finding the Fourth Proportional to 3,380.60, 5,070.90 and 2,214.20

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Solution

The fourth proportional to 3,380.60, 5,070.90 and 2,214.20 is: 3,321.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.60 : 5,070.90 = 2,214.20 : x
  2. Step 2: Convert to fraction form
    3,380.60/5,070.90 = 2,214.20/x
  3. Step 3: Cross multiply
    3,380.60x = 5,070.90 × 2,214.20
  4. Step 4: Simplify right side
    3,380.60x = 11,227,986.78
  5. Step 5: Solve for x
    x = 11,227,986.78/3,380.60
  6. Step 6: Final answer
    x = 3,321.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.